Solar Dynamics Observatory ([1]}) is the a space mission under NASA's Living With a Star (LWS) Program. It was launched on February 11, 2010 from Kennedy space center in Florida. The main objective of SDO is to understand the solar variations and their effects on the Earth's climate and other technological arrangements. SDO is also working to determine the generation of magnetic field on the solar surface and its evolution. This mission ensembles three scientific instruments: the Atmospheric Imaging Assembly [2]}, Extreme Ultraviolet Variability Experiment (EVE), and Helioseismic and Magnetic Imager [3]}. A brief classification of three instruments onboard SDO is given in table REF  Along with these three instruments, SDO contains a spacecraft bus and a ground station for monitoring. SDO is transmitting 150,000 fulldisk solar images with 9000 spectras. The observational studies presented in this thesis are done with AIA and HMI instruments onboard SDO. An image of the SDO spacecraft with AIA and HMI is presented in Figure REF . Full resolution science data for AIA and HMI are freely available at the Joint-SOC (JSOC) Stanford websitehttp://jsoc.stanford.edu.
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